EP1568515B1 - Pneu - Google Patents

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Publication number
EP1568515B1
EP1568515B1 EP03775934A EP03775934A EP1568515B1 EP 1568515 B1 EP1568515 B1 EP 1568515B1 EP 03775934 A EP03775934 A EP 03775934A EP 03775934 A EP03775934 A EP 03775934A EP 1568515 B1 EP1568515 B1 EP 1568515B1
Authority
EP
European Patent Office
Prior art keywords
circumferential
groove
tire
angled corner
obtuse
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03775934A
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German (de)
English (en)
Other versions
EP1568515A1 (fr
EP1568515A4 (fr
Inventor
Kenji The Yokohama Rubber Co. Ltd. YAMANE
Masahiro The Yokohama Rubber Co. Ltd. ISHIDA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yokohama Rubber Co Ltd
Original Assignee
Yokohama Rubber Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yokohama Rubber Co Ltd filed Critical Yokohama Rubber Co Ltd
Publication of EP1568515A1 publication Critical patent/EP1568515A1/fr
Publication of EP1568515A4 publication Critical patent/EP1568515A4/fr
Application granted granted Critical
Publication of EP1568515B1 publication Critical patent/EP1568515B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/13—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
    • B60C11/1376—Three dimensional block surfaces departing from the enveloping tread contour
    • B60C11/1384—Three dimensional block surfaces departing from the enveloping tread contour with chamfered block corners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/0302—Tread patterns directional pattern, i.e. with main rolling direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/04—Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/11—Tread patterns in which the raised area of the pattern consists only of isolated elements, e.g. blocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/13—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/13—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
    • B60C11/1307—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping with special features of the groove walls
    • B60C11/1315—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping with special features of the groove walls having variable inclination angles, e.g. warped groove walls

Definitions

  • the present invention relates to pneumatic tires.
  • pneumatic tires having a tread surface which is provided with a directional tread pattern the tire rotational direction of which is specified in one direction.
  • pneumatic tires including a tread surface having circumferential grooves disposed on both sides of a centerline of the tire, and lateral grooves extending outward in a widthwise direction of the tire from the circumferential grooves so as to incline towards the tire reverse rotation direction to thereby define rhomboid-shaped or parallelogram-shaped blocks having obtuse-angled corner portions and acute-angled corner portions in its center region (for example, see Unexamined Japanese Patent Application Publication No. 11-91313 ).
  • circuit courses are opened up to general car users, and the users often have chances to make their cars run a circuit course.
  • a lateral acceleration acting during turning is much greater, compared with that in normal driving when running a public road, and irregular wear different from that in the normal driving is, therefore, created.
  • EP-A2-1 106 395 corresponding with the preamble of claim 1, discloses a tyre having a tread pattern in which transverse grooves on each side of a centre line C are arranged in a uni-directional pattern in which the grooves 4,10 enter the ground contacting patch from the axially inner ends.
  • the axially outer groove wall 4o is provided with a variable angle of inclination along its length.
  • JP 10278512A and JP-A-4345503 disclose further tread patterns including inclined transverse grooves.
  • a pneumatic tire having a tread surface having a direction of rotation of the tire which is specified in one direction, the tread surface having a center region which includes at least one first circumferential groove extending in a circumferential direction of the tire on one side of a centerline of the tire, first lateral grooves which extend outwardly in a widthwise direction of the tire from the first circumferential groove so as to incline towards a direction of reverse rotation of the tire being disposed at predetermined intervals in the tire circumferential direction, blocks which have obtuse-angled corner portions and acute-angled corner portions being defined by the first circumferential groove and the first lateral grooves, wherein groove wall surfaces located on both sides of the obtuse-angled corner portion of each of the blocks facing to the first circumferential groove are inclined such that the inclination angles ( ⁇ ) thereof are gradually greater towards the obtuse-angled corner portion and are maximum at the obtuse-angled corner portion, and characterised in that the corner portions of the
  • rigidity of the kicking-out side obtuse-angled corner portions increases, which allows for a more even distribution of ground contact pressure of the blocks in running a circuit or the like where a great lateral acceleration acts during turning.
  • irregular wear resistance can be improved, and steering stability during turning can also be enhanced.
  • FIG. 1 there is shown an embodiment of a tread pattern of a pneumatic tire having a tread surface 1, the tire rotational direction R of which is specified in one direction shown by an arrow, has a plurality of circumferential grooves 2 extending along a circumferential direction T of the tire.
  • the plurality of circumferential grooves 2 includes two first circumferential grooves 2A disposed on both sides of a centerline CL of the tire in a center region 1A of the tread surface 1, a second circumferential groove 2B disposed at a location defining the center region 1A and each of shoulder regions 1B on both sides of the center region, and a third circumferential groove 2C disposed on the tire centerline CL.
  • Each of the first circumferential grooves 2A extends in the tire circumferential direction T, and is composed of a plurality of circularly curved groove portions 2A1, which are convex towards the tire centerline CL and are connected to one another.
  • Each of the groove portions 2A1 is in the form of a circular arc having a large radius of curvature, and each first circumferential groove is a so-called see-through groove, which can be seen through from one end to the other end of the second circumferential groove 2B when the tread surface 1 is fully developed.
  • Each second circumferential groove 2B extends straight along the tire circumferential direction T, and has a groove width which is less than the groove width of the first circumferential grooves 2A.
  • the third circumferential groove 2C also extends straight along the tire circumferential direction T, and has a groove width which is greater than the groove width of the first circumferential grooves 2A.
  • first lateral grooves 3 Disposed at predetermined intervals along the tire circumferential direction T are first lateral grooves 3 extending outward in a widthwise direction of the tire from each of the first circumferential grooves 2A so as to incline towards a direction of reverse rotation of the tire, and a plurality of blocks 7 having a diagonal pair of obtuse-angled corner portions 5 and a diagonal pair of acute-angled corner portions 6 are defined by the circumferential grooves 2A and 2B and the first lateral grooves 3 in the center region 1A.
  • Ribs 8 extending along the tire circumferential direction T are formed between the circumferential grooves 2A and 2C.
  • second lateral grooves 4 Disposed at predetermined intervals along the tire circumferential direction T are second lateral grooves 4 extending outward in the tire widthwise direction from each of the second circumferential grooves 2B so as to incline towards the tire reverse rotation direction, and a plurality of blocks 11 having a diagonal pair of obtuse-angled corner portions 9 and a diagonal pair of acute-angled corner portions 10 are defined by the circumferential grooves 2B and the second lateral grooves 4 in the shoulder regions 1B.
  • the first lateral grooves 3 each have an inner terminal end which is in communication with a connecting part between the circularly curved groove portions 2A1.
  • the outer end side of each first lateral groove 3 extends into each block 11 so as to cross and communicate with the second lateral groove 2A, and the outer terminal end thereof is located within each block 11.
  • the second lateral grooves 4 are displaced substantially one-half of the intervals from the first lateral grooves 3, and are substantially centrally located between the first lateral grooves 3.
  • the inner end side of each second lateral groove 4 extends into each block 7, and the inner terminal end thereof is located substantially centrally of each block 7.
  • the corner portions 5X, 6X, 9X, 10X and X of the blocks 7 and 11 facing to the second circumferential grooves 2B each have a groove wall edge section which is formed to have a chamfered face e which is circularly curved in cross section.
  • the chamfered faces e are inclined such that the inclination angles thereof with respect to the tire radial direction are greater than those of the groove wall surfaces W1 of the blocks facing to the second circumferential grooves 2B, which increases block rigidity of the corner portions in the areas where noise is apt to be created, thereby suppressing generation of noise due to slippage of the block corner portions.
  • Groove wall surfaces W2 and W3 located on both sides of the obtuse-angled corner portion, namely the kicking-out side obtuse-angled corner portion 5Y, of each of the blocks 7 facing to the first circumferential grooves 2A are inclined such that the inclination angles thereof are gradually greater towards the obtuse-angled corner portion 5Y, and the inclination angles thereof are maximum at the obtuse-angled corner portion 5Y.
  • the obtuse-angled corner portion 5Y has a groove wall edge section which is formed to have a chamfered face n which is circularly curved in cross section.
  • the groove wall surfaces W2 and W3 located on both sides of the obtuse-angled corner portion 5Y of each block 7 are inclined such that the inclination angles thereof are gradually greater towards the obtuse-angled corner portion 5Y, and the inclination thereof is maximum at the obtuse-angled corner portion 5Y, as described above.
  • This increases rigidity of the kicking-out side corner portions 5Y, and allows for an even distribution of ground contact pressure of the blocks 7 in running a circuit or the like where a great lateral acceleration acts during turning. Accordingly, irregular wear can be suppressed, and steering stability during turning can also be improved.
  • the inclination angles of parts of the groove wall surfaces in the obtuse-angled corner portion 5Y where the inclination angels are maximum are preferably in the range of 10 to 40 degrees. If the inclination angles thereof are less than 10 degrees, it is difficult to effectively improve irregular wear. If the inclination angles thereof are greater than 40 degrees, the first circumferential grooves 2A are wider in width at each part adjacent thereto, thereby increasing the ground contact pressure on the edge sections of the acute-angled corner portions 6 opposite the obtuse-angled portions 5Y. As a result, the edge sections of the acute-angled corner portions 6 wear rapidly and another irregular wear is created.
  • the first circumferential grooves 2A decrease in volume to thereby degrade wet performance.
  • the inclination angles thereof are desirably in the range of 20 to 30 degrees.
  • the inclination angle of the groove wall surface referred to in the present invention is, as shown in FIG. 2, an angle ⁇ between the groove wall surface W2 or W3 and a straight line J orthogonal to a line G tangent to the top surface 7a of the block 7 at an intersection F of the groove wall surface W2 or W3 and the top surface 7a.
  • the starting positions a and b from which the groove wall surfaces W2 and W3 make their inclination angles greater towards the obtuse-angled corner portion 5Y are located on the acute-angled corner portion 6 sides from the central positions of the groove direction lengths of the groove wall surfaces W2 and W3, and preferably, the groove wall surfaces W2 and W3 are inclined such that their inclination angles are gradually greater from the acute-angled corner portions 6 towards the obtuse-angled corner portion 5Y.
  • a ridge line m between the top surface 7a of the block 7 and the groove wall surfaces W2 and W3 connected thereto is preferably in the form of a circular arc having a single curvature radius K.
  • the pneumatic tire also has blocks 11 in the shoulder regions 1B, but is not limited thereto.
  • the teaching contained herein is applicable to any of pneumatic tires including blocks having obtuse-angled corner portions 5 and acute-angled corner portions 6, defined by the first circumferential groove 2A disposed on one side of the tire centerline CL and the first lateral grooves 3 in a tread surface 1 the tire rotational direction R of which is specified in one direction.
  • the teaching contained herein is preferably applied to pneumatic tires for passenger cars, especially employed for high performance vehicles with a large engine size.
  • Tires according to the present invention and prior art were prepared, respectively, having a tire size of 235/45ZR17;
  • the present invention tires had a construction shown in FIG. 1, and were arranged such that the groove wall surfaces located on both sides of the kicking-out side obtuse-angled corner portion of each of the blocks were inclined such that the inclination angles thereof were gradually greater from 10 degrees towards the obtuse-angled corner portion and had the maximum angles of 30 degrees at the obtuse-angled corner portion;
  • the prior art tires had the same constructions as the present invention tires except that the groove wall surfaces thereof had the same inclination angles of 5 degrees.
  • test tires were seated on 17 X 8JJ sized rims, inflated to an air pressure of 230 kPa, and mounted on a passenger car of 3 liter displacement; the evaluation tests for irregular wear resistance and turning performance were carried out in the following measurement methods, obtaining the results shown Table 1.
  • the car was run on a dry asphalt road surface, drawing a figure-8 with a lateral acceleration acting upon the car being 0.76G, and after repeating it 500 times, the remaining amounts of each obtuse-angled corner portion and each acute-angled corner portion on the kicking-out side of the block were measured; the evaluation results were represented by an index where the prior art tire is 100. The greater the index value, the smaller the difference between the remaining amounts of the obtuse-angled corner portions and acute-angled corner portions on the kicking-out side and thus the better the irregular wear resistance.
  • the tires according to the present invention can improve irregular wear resistance and enhance turning performance.
  • the groove wall surfaces located on both sides of the kicking-out side obtuse-angled corner portions of the blocks facing to the circumferential groove disposed on a side of the tire centerline are inclined such that the inclination angles thereof are gradually greater towards the obtuse-angled corner portion and are maximum at the obtuse-angled corner portion, which allows for an even distribution of ground contact pressure of the blocks in running a circuit or the like where a great lateral acceleration acts during turning. Accordingly, irregularwear resistance canbe improved, and steering stability during turning can also be enhanced.
  • a pneumatic tire having the aforementioned excellent effect is very effectively employed when general car users make their cars run a circuit or the like in which a large lateral acceleration is applied thereto during turning.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Claims (13)

  1. Bandage pneumatique ayant une surface de bande de roulement (1) ayant une direction de rotation (R) de bandage qui est spécifiée dans une direction, la surface de bande de roulement ayant une région centrale (1A) qui comprend au moins une première rainure circonférentielle (2A) s'étendant dans une direction circonférentielle (T) du bandage sur un côté d'une ligne centrale (CL) du bandage, des premières rainures latérales (3) qui s'étendent vers l'extérieur dans le sens en largeur du bandage depuis la première rainure circonférentielle de manière à être inclinées dans la direction de la rotation inverse du bandage étant disposées à des intervalles prédéterminés dans la direction circonférentielle du bandage, des blocs (7) qui ont des portions de coin d'un angle obtus (5) et des portions d'un coin d'un angle aigu (6) étant définis par la première rainure circonférentielle et les premières rainures latérales,
    où les surfaces de paroi de rainure W2, W3, situées des deux côtés de la portion de coin d'un angle obtus 5Y de chacun des blocs orientés vers la première rainure circonférentielle (2A) sont inclinées de telle sorte que leurs angles d'inclinaison (α) augmentent progressivement vers la portion de coin d'un angle obtus et atteignent un maximum à la portion de coin d'un angle obtus, et caractérisé en ce que:
    les portions de coin (5X, 6X) des parois de rainure (W1) de chacun des blocs (7) orientées au loin de la première rainure circonférentielle (2A) possèdent chacune une section de bord de paroi de rainure qui est formée pour avoir une face chanfreinée (e) qui est courbée circulairement en section transversale, les faces chanfreinées (e) étant inclinées de telle sorte que leurs angles d'inclinaison par rapport à une direction radiale du bandage sont plus grands que l'angle d'inclinaison de la surface de paroi de rainure (W1) orientée au loin de la première rainure circonférentielle (2A).
  2. Bandage pneumatique selon la revendication 1, où les angles d'inclinaison (α) de parties des surfaces de paroi de rainure (W2, W3) dans la portion de coin d'un angle obtus (5Y) où les angles d'inclinaison atteignent un maximum, sont de 10 à 40 degrés.
  3. Bandage pneumatique selon la revendication 1 ou 2, où la portion de coin d'un angle obtus (5Y), où les angles d'inclinaison (α) atteignent un maximum, présentent une section de bord de paroi de rainure (m) qui est chanfreinée sous la forme d'un arc circulaire en section transversale.
  4. Bandage pneumatique selon la revendication 1, 2 ou 3, où au moins une première rainure circonférentielle précitée comprend deux premières rainures circonférentielles (2A), chaque première rainure circonférentielle étant prévue de chaque côté de la ligne centrale de bandage (CL), des deuxièmes rainures circonférentielles (2B) s'étendant dans la direction circonférentielle (T) du bandage de chaque côté de la ligne centrale (CL) étant disposées à des emplacements qui définissent la région centrale (1A) et chacune des régions d'épaulement (1B) de la surface de bande de roulement (1), les premières rainures latérales (3) s'étendant de chaque première rainure circonférentielle (2A) en communication avec les deuxièmes rainures circonférentielles respectives (2B), les blocs (7) étant définis par les premières et deuxièmes rainures circonférentielles, et les premières rainures latérales dans la région centrale (1A) de la surface de bande de roulement et chacun ayant une paire diagonale de portions de coin d'un angle obtus (5) et une paire diagonale de portion de coin d'un angle aigu (6).
  5. Bandage pneumatique selon la revendication 4, où chacune des premières rainures circonférentielles (2A) est constituée d'une pluralité de portions de rainure courbées circulairement (2A1) qui s'étendent dans la direction circonférentielle (T) du bandage, les portions de rainure étant convexes vers la ligne centrale de bandage (CL) et étant reliées les unes aux autres.
  6. Bandage pneumatique selon la revendication 5, où les premières rainures latérales (3) s'étendent vers l'extérieur dans la direction en largeur du bandage au-delà des deuxièmes rainures circonférentielles respectives (2B) depuis les parties de connexion des portions de rainure courbées d'une manière circulaire (2A1).
  7. Bandage pneumatique selon l'une des revendications 4 à 6, où les positions de départ (a) et (b) à partir desquelles les surfaces de paroi de rainure (W2, W3) de la portion de coin d'un angle obtus (5Y) établissent leurs angles d'inclinaison (α) plus grands vers la portion de coin d'un angle obtus se situent sur les côtés de la portion de coin d'un angle aigu (6) depuis les positions centrales des longueurs de direction de rainure des surfaces de paroi de rainure (W2, W3).
  8. Bandage pneumatique selon la revendication 7, où une ligne de nervure m entre la surface supérieure de chaque bloc (7) et les surfaces de paroi de rainure (W2, W3) reliées à celui-ci se présente sous la forme d'un arc circulaire ayant un seul rayon de courbure K.
  9. Bandage pneumatique selon l'une des revendications 4 à 8, où chacune des régions d'épaulement (1B) présente des deuxièmes rainures latérales (4) disposées à des intervalles prédéterminés dans la direction circonférentielle (T) du bandage, les deuxièmes rainures latérales s'étendant vers l'extérieur dans le sens de la largeur du bandage depuis chaque deuxième rainure circonférentielle (2B) de façon à être inclinées dans la direction de rotation inverse du bandage, les blocs (11) étant définis par les deuxièmes rainures circonférentielles (2B) et les deuxièmes rainures latérales (4).
  10. Bandage pneumatique selon la revendication 9, où les deuxièmes rainures latérales (4) sont déplacées sensiblement selon une moitié des intervalles depuis les premières rainures latérales (3).
  11. Bandage pneumatique selon la revendication 10, où les deuxièmes rainures latérales (4) s'étendent dans les blocs (7) dans la région centrale (1A).
  12. Bandage pneumatique selon l'une des revendications 1 à 11, où la surface de bande de roulement (1) présente une troisième rainure circonférentielle (2C) s'étendant dans la direction circonférentielle du bandage sur la ligne centrale de bande (CL), une nervure (8) étant formée entre la troisième rainure circonférentielle (2C) et la première rainure circonférentielle (2A).
  13. Bandage pneumatique selon la revendication 12, où la troisième rainure circonférentielle (2C) a une plus grande largeur de rainure que chaque première rainure circonférentielle (2A), et chaque deuxième rainure circonférentielle (2B) a une largeur de rainure plus petite que chaque première rainure circonférentielle (2A).
EP03775934A 2002-12-03 2003-11-27 Pneu Expired - Lifetime EP1568515B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2002351304A JP4107385B2 (ja) 2002-12-03 2002-12-03 空気入りタイヤ
JP2002351304 2002-12-03
PCT/JP2003/015184 WO2004050388A1 (fr) 2002-12-03 2003-11-27 Pneu

Publications (3)

Publication Number Publication Date
EP1568515A1 EP1568515A1 (fr) 2005-08-31
EP1568515A4 EP1568515A4 (fr) 2006-05-31
EP1568515B1 true EP1568515B1 (fr) 2008-01-09

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ID=32463142

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03775934A Expired - Lifetime EP1568515B1 (fr) 2002-12-03 2003-11-27 Pneu

Country Status (8)

Country Link
US (1) US7322390B2 (fr)
EP (1) EP1568515B1 (fr)
JP (1) JP4107385B2 (fr)
KR (1) KR100985009B1 (fr)
CN (1) CN100348430C (fr)
CA (1) CA2501149C (fr)
DE (1) DE60318618T2 (fr)
WO (1) WO2004050388A1 (fr)

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US12115818B2 (en) 2012-12-19 2024-10-15 Bridgestone Americas Tire Operations, Llc Tire with bi-directional performance

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JP4583841B2 (ja) * 2004-08-31 2010-11-17 株式会社ブリヂストン 空気入りタイヤ
JP4639859B2 (ja) * 2005-03-07 2011-02-23 横浜ゴム株式会社 空気入りタイヤ
US8997810B2 (en) * 2007-05-11 2015-04-07 Toyo Tire & Rubber Co., Ltd. Pneumatic tire with tread having notch portions in shoulder block
JP4653831B2 (ja) * 2008-10-28 2011-03-16 住友ゴム工業株式会社 空気入りタイヤ
JP4996661B2 (ja) 2009-10-15 2012-08-08 住友ゴム工業株式会社 空気入りタイヤ
JP5707923B2 (ja) * 2010-12-17 2015-04-30 横浜ゴム株式会社 空気入りタイヤ
JP5791465B2 (ja) * 2011-11-04 2015-10-07 株式会社ブリヂストン 空気入りタイヤ
AU2012341419B2 (en) * 2011-11-22 2015-08-13 Bridgestone Corporation Tire
JP5718412B2 (ja) * 2013-07-02 2015-05-13 株式会社ブリヂストン 空気入りタイヤ
FI125377B (fi) * 2014-01-17 2015-09-15 Nokian Renkaat Oyj Ajoneuvon rengas
JP6591149B2 (ja) * 2014-08-29 2019-10-16 株式会社ブリヂストン 空気入りタイヤ
JP6582726B2 (ja) * 2015-08-20 2019-10-02 住友ゴム工業株式会社 タイヤ
EP3489036B1 (fr) * 2017-11-27 2020-05-20 Sumitomo Rubber Industries Ltd. Pneumatique

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12115818B2 (en) 2012-12-19 2024-10-15 Bridgestone Americas Tire Operations, Llc Tire with bi-directional performance

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EP1568515A1 (fr) 2005-08-31
JP2004182074A (ja) 2004-07-02
CN100348430C (zh) 2007-11-14
CN1720150A (zh) 2006-01-11
KR20050086665A (ko) 2005-08-30
EP1568515A4 (fr) 2006-05-31
CA2501149A1 (fr) 2004-06-17
WO2004050388A1 (fr) 2004-06-17
KR100985009B1 (ko) 2010-10-04
DE60318618T2 (de) 2008-12-24
US20060048876A1 (en) 2006-03-09
US7322390B2 (en) 2008-01-29
CA2501149C (fr) 2011-02-08
JP4107385B2 (ja) 2008-06-25
DE60318618D1 (de) 2008-02-21

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